-
240
-
Bolt fastening positions
190 200580
20
410
20
Air inlet
Air outlet
Anchor bolt position
(4 locations)
● In installing the unit, fix the unit's legs with bolts specified below.
Use a long block to extend the width.
Fasten with bolts
(M10-12)
Use a thicker
block to anchor
deeper.
● The protrusion of an anchor bolt on the front side must be kept within 15 mm.
● Securely install the unit so that it does not fall over during earthquakes or strong winds, etc.
● Refer to the above illustrations for information regarding concrete foundations.
● Install the unit in a level area. (With a gradient of 5 mm or less.)
Improper installation can result in a compressor failure, broken piping within the unit and abnormal noise generation.
Important
In case that the unit operates in cooling mode, when the outdoor temperature is –5°C or lower, please equip a flex flow adapter
and a snow guard hood (option) on the unit.
Refrigerant piping size selection
● Please use pipes clean on both the inside and outside and free from contaminants harmful to operation such as sulfur,
oxides, dust, chips, oil, fat and water.
● Use the following material for refrigerant piping.
Material: phosphorus deoxidized seamless copper pipe (C1120T-0, JIS H3300)
● Thickness and size: Please select proper pipes according to the pipe size selection guideline.
(Since this unit uses R410A, Select pipes having a wall thickness larger than the specified minimum pipe thickness.
● For branching pipes, use a genuine branching pipe set or header set at all times.
● Install a branching pipe set, paying attention to the direction of attachment, after you have perused through the installation
manual supplied with it.
● The length of piping from outdoor unit to first branch is 1.5m or more.
● For the handling of service valves, please refer to 4-2. Piping work.
(4) Refrigerant piping
(i) Determination of piping specifications
(Please select from the following matrix according to indoor unit specifications and installation site conditions)
Refrigerant piping restrictions
Please do not fail to observe the following pipe sizes and limitations of use.
A failure to observe this instruction can result in a compressor failure or performance degradation.
● Please avoid forming any trap ( ) or bump ( ) in piping as they can cause fluid stagnation.
● Maximum length (To the farthest indoor unit) .......................................... Within 70m
● Equivalent length (To the farthest indoor unit) ......................................... Within 95m
● Total pipe length (Combined total length of pipes) ................................ Within 100m
● ø9.52 pipe length ....................................................................................... Within 50m
● Height difference
(1) When the outdoor unit is above the indoor unit ................................. Within 30m
(2) When the outdoor unit is below the indoor unit ................................. Within 15m
(3) Height difference between indoor units in the same system .............. Within 15m
(4) Height difference between indoor units and first branch ................... Within 15m
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